Study Of Numerical Simulation For Building Corridor Fire Smoke Based On FDS

Because of various ignition factors and large quantities of inflammables, apartment building has been one of the buildings that are frequent and easily on fire, once the apartment building is on fire, it will cause great casualties and economic losses. Based on a mass of fire accidents analysis, the large amounts of smoke produced during a fire is main reason that causes casualties. Therefore, whether smoke could be evacuated efficiently and immediately during a fire will significantly affect the result of evacuation.This thesis focuses on a typical corridor-style student-apartment, and simulates the smoke’s movements in individual room and corridor. When a fire, the typical escape route is indoor-corridor-stairs-outdoor, therefore corridor plays a vital role in people evacuation, especially in these corridor-style buildings. This thesis takes the numerical simulation as the main tool to study the following 4 sub-topics:the characteristic while the smoke flows in a typical room; The characteristic while the smoke flows in a typical room in corridor under different conditions of heat release rate; The characteristic of smoke’s movement in corridor when the fire source locations and smoke extraction conditions are different. In term of the simulation results that is monitored both the horizontal and vertical gas smoke temperature, visibility, CO, CO2, O2 and the smoke layer height, then these conclusions can be got:the gas temperature, the concentrations of CO and CO2 of upper smoke layer decrease with the distance of the horizontal to the fire source increasing, while,in lower smoke layer, the gas temperature, the concentrations of CO and CO2 of upper smoke layer increase with the distance of the horizontal to the fire source increasing, and the smoke will sink and flow back due to obstacles, such as walls, causing the gas temperature, the concentration of CO, CO2 and the density of smoke particles are highest at farthest point. In the vertical direction, the gas smoke temperature, the concentrations of CO and CO2 decrease from the corridor ceiling to the floor.